multi: remove externalhosts field

config.go

@@ -118,11 +118,6 @@ const (
 	// keep in memory if no size is specified.
 	defaultBlockCacheSize uint64 = 20 * 1024 * 1024 // 20 MB
 
-	// defaultHostSampleInterval is the default amount of time that the
-	// HostAnnouncer will wait between DNS resolutions to check if the
-	// backing IP of a host has changed.
-	defaultHostSampleInterval = time.Minute * 5
-
 	defaultChainInterval = time.Minute
 	defaultChainTimeout  = time.Second * 30
 	defaultChainBackoff  = time.Minute * 2
@@ -330,7 +325,6 @@ type Config struct {
 	RawListeners                  []string `long:"listen" description:"Add an interface/port to listen for peer connections"`
 	RawExternalIPs                []string `long:"externalip" description:"Add an ip:port to the list of local addresses we claim to listen on to peers. If a port is not specified, the default (9735) will be used regardless of other parameters"`
 	RawExternalDNSHostnameAddress string   `long:"external-dns-hostname" description:"Specify a DNS hostname for the node's external address. If no port is provided, the default (9735) is used."`
-	ExternalHosts                 []string `long:"externalhosts" description:"Add a hostname:port that should be periodically resolved to announce IPs for. If a port is not specified, the default (9735) will be used."`
 	RPCListeners                  []net.Addr
 	RESTListeners                 []net.Addr
 	RestCORS                      []string `long:"restcors" description:"Add an ip:port/hostname to allow cross origin access from. To allow all origins, set as \"*\"."`
@@ -1180,10 +1174,6 @@ func ValidateConfig(cfg Config, interceptor signal.Interceptor, fileParser,
 		return nil, mkErr("NAT traversal cannot be used when " +
 			"listening is disabled")
 	}
-	if cfg.NAT && len(cfg.ExternalHosts) != 0 {
-		return nil, mkErr("NAT support and externalhosts are " +
-			"mutually exclusive, only one should be selected")
-	}
 
 	// Multiple networks can't be selected simultaneously.  Count
 	// number of network flags passed; assign active network params